I am sorry for this delayed reply to your gardening question. The spring rush has brought a deluge of questions and we are working hard to catch up!
Those symptoms sound like the plants are in too much sun. If this is not the case then perhaps you need to water more often or they could be in a growing mix/soil that is just too well drained. Sand and chunky potting mixes often won't hold enough moisture to sustain the plant between waterings.
Thanks for the question. Best wishes for a wonderful gardening season. Please stop in again soon!
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